Report of the 2004 Uniform Regional Scab Nursery for Spring Wheat Parents







Coordinator:  David F. Garvin

USDA-ARS, Plant Science Research Unit

411 Borlaug Hall, University of Minnesota

1991 Upper Buford Circle, St. Paul, MN 55108


Report prepared by: David F. Garvin and Zachary Blankenheim




The Uniform Regional Scab Nursery for Spring Wheat Parents (URSN) was grown for the 10th year in 2004.  Six mist-irrigated locations at Brookings, SD, St. Paul and Crookston, MN, Prosper and Langdon, ND, and Glenlea, Manitoba, Canada, and two locations where supplemental mist irrigation was not used (“dryland screening locations”) at St. Paul and Crookston, MN were planted in 2004.  The Glenlea location encountered problems and thus is not included in this annual report.


A total of 45 entries were included in the 2004 URSN, including the resistant checks 2375, BacUp, and ND2710, and the susceptible checks Wheaton and Oslo.  The other 40 entries were contributed by university, industry, or national breeding programs.  Four of these entries were durums, and five were USDA PI genotypes that are possible new sources of scab resistance.


A core set of traits evaluated provided from most locations included incidence of scab, scab severity, disease index, and visual scabby kernel ratings (VSK, @ tombstone).  Additional recorded trait data are presented in the relevant individual location tables.  Overall means for traits across locations are presented, as are relative rankings for scab incidence, severity, disease index, and VSK.  Correlation coefficients are provided between scab incidence and severity, disease index, VSK, and DON.





This material is based upon work supported by the U.S. Department of Agriculture, in cooperation with the U.S. Wheat & Barley Scab Initiative.  Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S. Department of Agriculture.



St. Paul, MN

January, 2005




Cooperating Agencies, Stations and Personnel


Table 1.  List of Entries in the 2004 URSN


Tables 2-6.  Nursery Data by Individual Location, Mist-Irigated Locations


Table 7.  Trait Means Across Mist-Irrigated Locations, with Rankings


Tables 8-9.  Nursery Data by Individual Location, Dryland Locations


Table 10.  Trait Means Across Dryland Locations, and Rankings


Table 11.  Correlation Coefficients Among Traits


Table 12.  Correlation Coefficients, Mist-Irrigated vs. Dryland Means




Cooperators for the 2004 Uniform Regional Scab Nursery for Spring Wheat Parents



North Dakota State University (Prosper):

Mohamed Mergoum and Robert Stack



North Dakota Agricultural Experiment Station (Langdon):

John Lukach



South Dakota State University (Brookings):

Karl Glover



University of Minnesota (St. Paul, Crookston):

Jim Anderson, Ruth Dill-Macky, John Wiersma, and Kent Evans



Agri-Food Canada, Glenlea, Manitoba:

Jeannie Gilbert and Gavin Humphreys